Injecting device.



C. L. DAY.

.INJECTING DEVICE.

APPLICATION FILED NOV. 18. 1912.

1 1%,}. Patented June 22, 1915.

I THE NORRIS PETERS 60.. PHOTD-L|THO.. WASHINGTON. D, C.

CHARLES 1.. DAY, or stances, ILLrivois.

INJECTING DEVICE.

essrs.

Specification of Letters Patent.

Patented June 22, 1215.

Application filed November 18, 1912. Serial No. 732,053.

To all whom it may concern:

Be it known that 1, CHARLES L. DAY, a citizen of the United States, residing at Glencoe, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Injecting Devices, of which the following is a specification.

The invention relates to an injecting device and more particularly to a device for introducing a thawing liquid, such as alcohol, into a gas pipe or system of gas pipes. It will be obvious that the device might, however, be used in other situations where similar conditions prevail.

A primary object of the invention is to provide a device for introducing alcohol into a gas pipe which will be simple in construction and operation, cheap to manufacture, small in compass and which is constructed so as to permit the introduction of the liquid against any pressure of gas in the pipe and so as to be incapable of manipulation, accidentally or intentionally, which will allow gas to escape therethrough.

It is well known that in severe weather ice crystals are likely to form in gas pipes exposed to outside temperatures and it has been customary to pour alcohol, or other agents, into gas pipes for the purpose of thawing them out. Several different devices have been proposed with the purpose of facilitating this operation, but, so far as I am aware, no device has been produced prior to my invention which successfully meets all of the requirements above noted as does the device of my invention.

The invention is illustrated in the accompanying drawing wherein Figure 1 is a vertical sectional view of the device applied to a gas pipe showing the valve in filling position; Fig. 2 is a fragmentary sectional view showing the valve in reverse position, that is, in the discharging position, and Fig. 3 is a fragmentary side elevation of the device.

Like characters of reference designate like parts in the several figures of the drawing.

Referring to the drawings, 10 designates a cup preferably provided with a cover 11 which is hinged to the cup by means of the pintle 12. At the bottom of the cup, and preferably formed integrally therewith, is a tapered or conical casing 13 in which is revolubly mounted a hollow tapered or conical valve 14 preferably formed at the smaller end with a threaded stem 15 which extends through a cap 16 which seats against the end of casing 13 and is held in position by the nut 17. The cap 16 fits over a boss 18 formed on the stem 15 which is flattened, as indicated at 19, so that the cap turns with the valve. Any other suitable means might be employed for insuring a gas tight fit between the valve and its casing. The valve 1s apertured at points of different diameter. Preferably it has a large opening 20 adapted to register with the opening 21 in the bottom of the cup 10 (Fig. 1) and with the discharge port 22 in the underside of the casing (Fig. 2), and also smaller ports 23, 23 on opposite sides of the port 20 which, when the valve is turned into the discharging position shown in Fig. 2, register with recesses 24, 24 forming, in effect, a part of the discharge port 22. The valve is provided with a handle 25, or other suitable device, whereby it may be revolved in its casing.

Any suitable means may be employed for connecting the device with the gas pipe with which it is intended to serve. A typical installation is shown in Fig. 1. 26 designates a service pipe which connects with the main in the street and extends through the wall of the building which it supplies, which wall is indicated by the dotted lines 27. 28 designates a pipe connected to the service pipe 26 by a T 29 and extending to the meter (not shown). The injecting device is shown as provided with an internally threaded neck 30 connected by a coupling 31 with an elbow 32 fitted into the T 29.

The operation of the device is as follows: When the valve is in the position shown in Fig. 1, with opening 20 registering with the opening 21 in the bottom'of the cup, the alcohol in the cup will fill the chamber of the valve. The discharge port in the bottom of the casing is closed by the valve so that gas cannot escape. The alcohol is iniected into the pipe by giving the valve a half turn which brings the opening 20 into register with the discharge port 22 and the openings 23, 23 into line with the recesses 24:, 2 1. The turning of the valve closes the inlet port 21. If the valve were provided with the ordinary discharge orifice it would be impossible to introduce the alcohol into the gas pipe against the pressure of the gas provided that pressure were great enough a some: of the patent mas he seemed as to equal the weight of the liquid. I over come this by tapering the valve and aperturing the same at points of different diameter. A siphon effect is produced which results in immediately emptying the chamber of the valve of its contents. The action is indicated by the arrows in Fig. 2 The column of liquid above the opening 23 in the larger end of the valve is higher and consequently weighs more than the column of liquid above the opening in the small end of the valve. As the gas pressure is equal as (against both these columns, the higher column overbalances the other and the gas displaces the liquid in the valve. The center opening 23 is not essential so far as the discharge of the liquid is concerned. I provide the valve with this opening, however, to avqidjenlar ing the opening in the bottom of the cup and also for the purpose of facilitating the discharge As soon as the siphon action has commenced the alcohol will immediately be forced out through the large opening 21. The apertures 21, 23, are preferably, but not necessarily, made discontinuous as shown as a quicker and more certain discharge seems to result. I

It will be seen that the valve 14: hatever position it may be, shuts off direct communication between the gas pipe and the cup '10. 'The device therefore cannot be manipulated either accidentally or intentionally so as to allow the escape of gas from the systemq While I have described invention in a preferred embodiment it Will be understood thatfchanges in construction might be made without departure from the principles of the invention.

I claim:

1. The combination with a gas system, of means for injecting measured quantities of alcohol into said system comprising a cup formed with an opening in the bottom, a conical valve casing below the cup and communicz'iting therewith through said opening and formed in the bottom with an outlet opening communicating with said gas system, and a hollow conical valve in said valve casing closed except for an opening adapted to register with the opening in the bottom of the cup, and, on opposite sides thereof, lengthwise of the valve, two other openings; all three openings in the valve being adapted to communicate with the outlet opening int-he bottom of the valve casing when the valveis turned into discharging position.

2. The combination with a gas system, of means for injecting measured quantities of alcohol into said system, comprising a cup formed with an opening in the bottom, a conical valve casing below the cup and coinmunicating therewith throughs'aid opening and formed in the bottom with an outlet opening connnu'n'icating with said gas system, and a hollow conical valve in said valve casing closed except for a plurality of openings in one side arranged longitudinally of the valve, one of said openings being adapted to register with the Opening in the bottom of the cup and all adapted to communicate with the outlet opening in the bottom of the valve casing when the valve is turned into discharging position.

CHARLES L. DAY.

Witnesses G. Y. SKINN'E'R, Y L. A. FALKENBERG.

gents each, is a'daressi'n "are cbmmissitner at mam. Washington, 1). "G." 

